-50.17% is the change from 905 to 451
Calculation steps:
[( 451 - 905 ) ÷ 905] x 100 = -50.17%
Formula
Percentage change = [(451 - 905) / 905] x 100
Subtract the new number by the original number
451 - 905 = -454
-454 ÷ 905 = -0.5016574585635359
-0.5016574585635359 x 100 = -50.17%